We have to find the zeros of `f(x) = sin(x-pi/4).`

Hello!

Well, this task isn't very complicated. Recall that zeros of a function `f(x)` is the points `x` at which `f(x)=0.`

So we have to solve the equation  `sin(x-pi/4)=0.`

The general solution of the equation  `sin(w)=0` is `w=k pi,` where `k` is any integer (yes, this means that there are infinitely many solutions).

In our case `w=x-pi/4=k pi,` so `x=pi/4+k pi.` This is the answer(s) (remember `k` is any integer).